john kerry is due to meet with german chancellor angela merkel and later russian foreign master sergei lavrov. sergei lavrov earlier criticized the opposition in syria for refusing to talk to the government. >> we have noticed the need to influence both of the government and, first of all, the opposition to persuade them to not come up with unrealistic request and preconditions with the start of dialogue. it seems extreme is to bet on the military solution to syria -- syria's problems have up till now dominated the ranks of the opposition, including the so- called syrian national coalition get it, six world powers are expected to offer iran new incentives to give up its controversial nuclear program in talks underway in kazakhstan. both sides are sitting down for the fourth time to try to reach an agreement. the last meeting of the six countries with iran was in june last year. our diplomatic editor james baays reports. >> gold on sale in the grand bazaar in tehran. the importance to the iranian economy goes way along the jewelry business here. in recent years, iran has traded its oil